For unknown reasons he became the Purple Mask (Daring Mystery Comics #3,4) and then The Falcon (Daring Mystery Comics #5,6). As those characters, he was the cover feature on Daring Mystery Comics #3 and #5. The first Purple Mask story was reprinting in Daring Mystery 70th Anniversary Special.

Dennis Burton was a Deputy District Attorney who became frustrated with the American civil justice process and decided to take the law into his on hands. Using the alias "The Laughing Mask", he donned a red suit and phosphorescent glowing mask, plus a pair of .45 pistols. He accepted killing as a means for justice, shooting several unarmed gangsters during his first appearance.

Living in a luxurious mansion with his former teammates, he resumes his heroic business, this time in full compliance with the Superhero Registration Act. His trademark pistols become his undoing when he registers them as his weaponry of choice. The pistols are discovered to have been looted from his execution of a mobster during the 1940s, a crime for which the Laughing Mask is still held accountable. He is then arrested. Master Mind Excello later arranges for his bail.

In return for clemency on his arrest, the Mask arranges to work with the robotic 'Electro', as he is one of the few entities compatible with the being. Via remote he attacks a Middle Eastern drug operation.

During a flashback sequence it was revealed Laughing Mask killed several unarmed German prisoners of war.